Heating apparatus.



Nq.7s5,412.- PATE'NTED 'AUG. .4, 190a.

E. RIEDEL & J. FULHA'BER.

- HEATING APPARATUS.

APPLICATION FILED MAR. 24, 1903.

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no 1mm w i INVENTOR Z 4 w ATTORNEYS PATENTED AUG. 4, 1903. E. RIEDEL & J. FULHABER.

HEATING APPARATUS. APPLICATION fILIiD MAR. 24, 1903.

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BY j A4, ATTORNEYS- wnmssesi employed for the circulation of hot water or steam; and it has for itsprincipal object. to.

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' trate our invention.

To. a whom/ it may concern:

vented certain new and useful Improvements U ITED STATES PATENT Patented August 4, 1903.

OFFICE.

ERNEST RIEDEL AND JEROME FULHABER,"OF PATERSON, NEW JERSEY.

H EAT'I N a A PARATU s.

SPECIFICATION forming part of Letters Patent No; 735,412, datedAugust 4, 1903.

: Application at Math 24., 1903.

Be it known that we, ERNEST RIEDEL and JEROME FULHABER, citizens of thejUnited States, residing in Paterson, in the county of Passaic and State of New Jersey, have inin Heating Apparatus; and we do hereby declare the following to be a full, clear, and ex act description of the invention, such as will enable others skilled in the art ,to which it appertains to make and use the same, reference being had to the accompanying drawings, and to characters of reference marked thereon, which form. a partofthis specification.

Our invention relates to thatclass of heating apparatus in which a tubular system is provide a heating apparatus in which the desired conditions" forgiving 0E heat;may be quickly reached and thereupon maintained with only the expenditure of the minimum The invention consists in'an improved heating apparatus formed and arranged substantially as hereinafter described and finally embodied in the clauses of the claim.

The accompanying drawings fully illus- Figured is a view in front elevation; Fig. 2, a vertical sectional view taken approximately just inside the adjacent side Wall of the shell; Fig. 3, a horizontal sectional view on the line 00 a; in Fig. 1, and Figs. 4 and'5'detail views.

Our apparatus is shown and will be herein described as comprising in a single organization two heat generating anddispensing units; but there is no reason why in so far as the spirit of the invention is concerned a single unit only may not be utilized.

The shell of theapparatus comprises a hollow base a; lined at the back and both sides and also divided substantially centrally by some refractory substance, such as fire-brick, as at b, a vertical drum 0, resting on base a, and a cap d, surmounting the drum and having fitted to it the smoke-pipe 6. At each side of the partition portionf of the fire-brick the base a is provided with a'fuel-supply door 9' and an ash-pit door h.

ql'idenote two series of parallel rows of vertical tubes. At their tops these rows of tubes Serial No. 149,355. (No model.)

ones communicate with a series of parallel horizontal tube-heads p. A loop q, arranged at the back lower portion of the shell, communicates on the one hand with the circulation-pipe m, and by means of series of tubes r and tubes 3 with tube-heads 0 and p, respectively.

It will be observed that tube-heads p and o are arranged, respectively, above and below the'fuel-supply door 9. The space t between them constitutes the firepot and has for its bottom a grate composed of a horizontal se* ries of tubes n, which communicate with the tube-head 0 at the front, and at the back extend through and have support in the back wall of the ash-pit, whereupon by means of tubes 4) they communicate with the loop q.

Loop g has a water-supply pipe w and a drainportion of loop Z are arranged two cut-01f 9 valves 2, and in each leg of loop q is arranged another cut-ofi valve 3. By this means either of the units may be cut off from the circulation. In communication with looplare also safety-valves 4. 5is an automatic diaphragm damper regulator connected by a chain 6 with the ash-pitdoors h and havingits pipe 8 communicating with the portion ofloop Z which is relatively between valves 2 and circulation-pipe m.

In order to clear the fire-pot of ashes, we provide a rake 9, consisting of a series of parallel fingers 10, arranged on parallel rods 11 and so disposed as to take up in between the gratebars, said rods having their ends extending into guideways 12, which are arranged against the sides of the ash-pit and extend substantially horizontal except near the back, where they curve slightly downwardly, as at 13. 14 is a draw-bar which is pivoted on the front rod 11 and is guided in an opening 15 in the base a over the ash-pit door.

In the use of our apparatus the tubular structure contained within the shell being filled to the proper height with water and the vfire being started the heating of thewater in said structure will induce circulation up through the loop l and around by way of pipe m back to said structure through loop g. It will be understood that in referring to the circulation we have in mind either employing the apparatus as the generator of a hot-water or steam system. If it is desired to operate only one unit, one valve 2 and the corresponding valve 3 are closed, the fire for said unit being of course extinguished. The circulation under these circumstances then continues with the other unit as the generating medium. The regulator for the dampers and the water and steam-gages having each a connection with the system at points relatively to the generating units, which are beyond the valves 2 and 3, said regulator and the gages are operative at all times, whether one or both of said units is working; and since each unit has a safetyvalve attached im mediately thereto-t. e., between valves 2 and 3-there is no danger ofaccident. It will be understood that that arrangement of the tubes 11 and tube-heads o and 19, whereby a sort of a basket of tubes forms the fire-pot, is a feature of great advantage, especially in so far as expediting the action is concerned.

The raking of the ashes out of the fire-pot is elfected, as will be obvious, by simply moving the rake 9 back and forth by means of the draw-bar 14.

We prefer to construct the drum 0 of sheet metal and to insulate the portion of the tubular structure of each unit of the generator, which said drum directly incloses by a surrounding envelop 16 of asbestos.

Having thus fully described our invention, what we claim as new, and desire to secure by Letters Patent, is-

1. In a circulating heating system, the combination ofa circulating-pipe,loops communicating each with one end of said pipe, a generator consisting of a plurality of units each comprising a plurality of tubular structures communicating at their upper portion with one of said loops and at their lower portion with the other loop, and valves arranged in said loops between each unit and the adjacent end of the pipe, substantially as described.

2. In a generator for a circulating heating system, the combination of parallel rows of upright tubes, the outer rows being extended downwardly farther than the intermediate rows,substantially horizontal tubing connecting up the tubes in each row at the top, substantially horizontal tubes connecting up the.

tubes in each of the intermediate rows at their lower ends, a substantially U-shaped and horizontal tubular structure connecting up the lower ends of the outer rows of tubes, and substantially parallel tubes arranged within, and approximately in the plane of, said U- shaped tubing and communicating therewith,

said last-named tubes and the U -shaped tubing forming a grate, substantially as described.

In testimony that we claim the foregoing we have hereunto set our hands this 21st day of March, 1903.

ERNEST RIEDEL. JEROME FULHABER.

Witnesses:

JOHN W. STEWARD, ROBERT J. POLLITT. 

